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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 28.999999999999996%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
During debugging, nothing is displayed in the diagnostic tool window
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 10%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAX%3C/text%3E%3C/svg%3E)
Hi @永达 文 ,
Welcome to Microsoft Q&A!
What is your project type? If you create a new project, does the Diagnostic Tools window appears normally?
Please try to update your Visual Studio to the latest version and reinstall the “.NET profiling tools” in Visual Studio Installer > Modify > Individual components.
Sincerely,
Anna
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Thank you for your answer.
My project type is ASP.NET Web API, the creation of a new project is still the same, and the Visual Studio version is up to date (17.4.3).
I also tried to reinstall the ".NET profiling tools", but the problem remains the same, but I also installed Visual Studio 2019, which will display the Diagnostic tools properly.
Can you find the “ASP.NET Core” overview page when creating a new ASP.NET Web API project? If you can’t find it, please refer to the similar issue and check if the webview2 is installed. You can also try to reinstall the webview2.
Sorry, I don't quite understand your reply.
I can see the ASP.NET Core overview page, WebView 2 has also been installed.
My problem is that the diagnostic tool does not display properly during debugging, as in my previous picture.
Hello, this is the "ASP.NET Core" overview page:
Yes, I see it, but that's not my problem.Except for the ASP.NET Core project, none of the other projects will display Diagnostic tools normally, only an empty form with nothing in it.
Including the Performance Profiler, the generated analysis reports are blank!
Sorry for my delay reply!
Can you check if the installed extensions affect? Please temporarily disable or uninstall the installed extensions under Extensions > Manage Extensions > Installed.
If it persists, you can try to reinstall VS2022.
It doesn't matter. I've tried what you said, including reinstallation, many times, but the problem still exists. I have asked the question in the Developer Community. By checking the log, the engineer suspected that it was caused by webview2, but there was no clear answer.
Have you tried to reinstall webview2? You can also update your VS to the latest version and check again.
I tried to reinstall WebView2, but the problem remained the same
I tried to reinstall WebView2, but the problem remained the same
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(195.2, 22%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EO%3C/text%3E%3C/svg%3E)
You need to enable the service (under the Services tool setting it to automatic and restarting VS):
VSStandardCollectorService150
Visual Studio Standard Collector Service 150
Visual Studio Data Collection Service. When running, this service collects real-time ETW events and processes them.